Belt cutting and punching tool



March 17, 925. I Q 1,530,037

F. G. DADMUN BELT CUTTING AND PUNCHING TOOL Filed June 22,- 1925 livmswrok' Frederick G Dad/nun,

Patented Mar. 17, 1925.

* UNITED STATES PATENT OFFICE. 1

BELT CUTTING- .AND PUNC'HING TOOL.

Application filed June 22, 1923., Serial No. 647,055.

To all whom it may concern:

Be it known that I, Fnnnnnrcn G. DAD- MUN, a citizen of the United States of America, residing at 344: Notre Dame Street west, in the city of Montreal, in the Province of Quebec, in the Dominion of Canada, have invented certain new and useful Improvements in Belt Cutting and Punching Tools; and I do hereby declare that the following is a true, clear, and exact description of the same.

This invention relates to the class of cutting and punching tools particularly designed for working on the round belting commonly used on sewing machines, etc.

The main object of the invention is to provide a simple, strong, and most economical tool that will easily and readily effect the neat cutting of the ends of the belt and the correct piercing of the holes for the ordinary wire fasteners whose ends have to be bent over the belt ends when such belts are being repaired.

To assemble or repair a belt of this character, first the ends require to be neatly cut off for avariable distance. The next operation consists in punching a hole, perfectly centered through the belt, at a fixed distance from each end; and, after inserting the wire fastener through these holes, the ends of the fastener are then bent over andplied on the belt. To execute these operations properly, generally requires some skill, particularly for the neat adjustment of theends of the belt in accordance with the distance at which the holes are punched to conform with the size of the wire fastener; Also, care must be taken for punching the holes perfectly through the center of the belt, for the proper alinement and wear ofthe belt.

This tool will perform thevarious opera- 1 tions in a most satisfactory manner, even in the hands of unskilled persons; and its mode of operation and structural details, together with its general advantages, will be hereinafter fully described.

In the accompanying drawings:

Figure 1 represents a form of the invention comprising a pair of cutting and punching elements,

Fig. 2 shows a modification, 1

Fig. 3 is an edge view of the tool showing it as being used in carrying out the cutting andwire fastening operations,

Fig. 4: is a detail view of the one-piece cutting and punching element, and

handles.

pro ecting portion t are, of course, disposed Fig. 5 is a fragmental view of a fastened belt. l

Like numerals of reference indicate corresponding parts in each figure.

In appearance, the tool is constructed somewhat like an ordinary pair of pliers, comprising likewise jaws 1 and handles 2 pivoted at 3 in cross-lever relation, said handles having enlarged portions or jaw members 1. Almost in line with the pivot 3 and at right angles with each jaw 1, is a projecting portion 4L slotted between its faces to receive the pivot end of the cutting and punching member 5, which is carried in a channel 5 formed between the faces of the enlarged portions or jaw members 1 of the The channel 5"and the slot in the in alinement, so as to permit the above-described arrangement ofthe member 5. The thickness of the tool is preferably equal to double the distance of the hole to be punched from the end of the belt; hence, the face of the tool will serve as a guide for the punching operation. l v

The cutting and punching member 5 is preferably formed in one integral piece and consists of a pivoting bar terminating at its outer end in a T-shaped portion. The leg of the T forms the cutter 6 and has its edge sharpened atright angles with one arm of' the-T, whicharm extends immediately under the pivoting bar and parallel thereto and forms the punch 7. The other or rearwardly extending arm 8 of the T acts as a guide for the member 5, and is retained in the channel of the handle 2 by a pin9 against which the upper edge of this arm bears, while the member 5 is allowed to move longitudinally with the handle 2.

Through the. thickness of the tool, and directly in the respective paths of the punch 7 and cutter 6, are two holes 10 and 11 through which. the belt is inserted for its respective operation. I

It is evident that, as represented in Fig.1;

the two halves of the tool (the upper and lower as shown) may be alike; or that, as illustrated in Fig. 2, only the upper half may have the structural features described.

In Fig. 3, the belt 11 is shown as inserted through the hole 11 to be cut. The amount to be cut off is'necessarily left to the judgment of the operator who may guide said beltat will through the said hole 11.

After the belt has been out, it is then ina serted through the hole 10, and in closing the tool the belt will be neatly punched.

In the faces of the jaws 1 are grooves 12 forming a circle when the jaws 1 are closed. After the belt has been punched, a wire fastener 12 is inserted through the punched hole, and the end of the fastener 12 is then bent over and pressed upon the belt after being placed in between the grooves 12 (see Fig. 3). The jaws 1 have also an elongated nose for the purpose of undoing wire fasteners and for other handy uses in repairing belts of the kind in question.

In a tool, as illustrated in Fig. 1, it would be preferable to drill the holes 10 of different diameters. Only few sizes of belts of this nature are in common use, and a tool of this character would, therefore, be of the highest efficiency; Some belts, after being used for a time under certain conditions, lose their consistency and yet are serviceable; hence, the punching operation could be carried out in the hole 10 nearest in diameter to that of the belt, which would naturally eliminate most of the deformities.

W'hat I claim as my invention is 1. An implement, comprising a pair of levers pivoted together in crossed relation and provided at their rear ends with handles and at their front ends with coacting jaws, and a tool pivoted atits front end to the jaw of one lever and extending rearwardly into a longitudinal channel in, the other lever to move endwise in said channel during the opening and closing of the handles; the rear portion of the tool embodying a working member which operates in the channel when the handles are being closed.

2. An implement according to claim 1, in which the tool embodies a front stem portion and a T-shaped rear portion, the latter portion being disposed in the channel and; comprising a guide member and at least, one working member.

3. An implement according to, claim 1, in which the tool embodies a front stem portion and a T-shaped rear portion, the latter portion. being disposed wholly within the channel and comprising a punch, a cutter, and a guide.

fl. An implement according to claim 1, in which the tool embodies a front stem portion and a T-shaped rear portion, .one arm of the T forming: a punch andv the other arm forming a guide, and the leg of the T forming a cutter.

5. An implement according to claim 1, in

which the rear portion of the tool embodies a member for guiding the tool during its endwise movements and at least one working member.

6'. An implement according-to claim 1, in which the rear portion-of the tool embodies a member for guiding the tool during its endwise movements and at least one working member, and in Which the channeled lever has a cross-pin extending through the channel for engagement with the guide member, and also, has an opening formed through it which intersects said I channel transversely and across which, the working member moves during; its operation.

7. An implement, comprising a pair of levers pivoted together in, crossed relation and provided at their rear ends with handles and at their front ends with coacting jaws; one lever having an enlargement at the inner end. of its handle which is formed along its outer edge with a longitudinal channel, and the other lever having a projection adjacent and at right angles to its jaw which is. formed with a slot alining with the channel;, and a tool pivoted at its front end in said slot and extending rearwardly into said channel to move longitudinally therein whenthe handles are opened and closed, the rear portion of the toolhaving a working member. which operates in the channel during the closing of the handles.

8. An implement, comprising a pair of levers pivoted together in crossed relation and provided at their-rear ends with halldles and, atv their front ends with coac'ting jaws, one lever having an. enlargement at the innerend of its handle whichv is formed along its outer edge with a longitudinal channel, and the other lever having a projection adjacent and at right angles to. its jaw-which is formed with a slot al'i'ning with the chimnel; atool pivoted atv its front end in: said slot. and extending 'rearwardly into said channel to, move longitudinally therein when the handles are. opened and, closed, the. rear portion of thetool having a guide member and a working member, the latter of which operates in the channel during the closing of the handles, and a cross-pin extending through said channel for sliding engagement with the. guide member.

Signed at Montreal, Quebec, Canada, this 8th day of June, 1928. j j I FREDERICK G. DADMUN. itnesses C. PATENAUDE, J. A. CHOQUETTE; 

